30978234 has 32 divisors (see below), whose sum is σ = 78675840. Its totient is φ = 8850816.

The previous prime is 30978229. The next prime is 30978253. The reversal of 30978234 is 43287903.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40599 + ... + 41354.

It is an arithmetic number, because the mean of its divisors is an integer number (2458620).

Almost surely, 2^30978234 is an apocalyptic number.

30978234 is an abundant number, since it is smaller than the sum of its proper divisors (47697606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30978234 is a wasteful number, since it uses less digits than its factorization.

30978234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81971 (or 81965 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 30978234 is about 5565.8093751044. The cubic root of 30978234 is about 314.0645262066.

The spelling of 30978234 in words is "thirty million, nine hundred seventy-eight thousand, two hundred thirty-four".